Frequently Asked Questions about Digesil NC, NC-X and Gel
What is Digesil?
Digesil is a chemical blend that is specifically designed for the removal of numerous types of semi-cured and fully cured silicones. Some examples manufacturers include Momentive (GE), Dow Corning, BlueStar, NuSil, ShinEtsu, and Wacker. We recommend the NC-X grade for Dow Corning and the NC grade for most other brands.
How does it work?
Digesil penetrates the polymer to cleave it into smaller parts emulsifying the polymer. This emulsification completely breaks down the material for easy removal. It also prevents re-deposition and enables easy rinsing. Digesil reacts chemically with the silicone, therefore temperature is very important. We recommend a minimum temperature of 70°F and around 80°F for good performance. In industrial situations, you can heat to 110°F for enhanced performance.
Where is it used?
Digesil is used anywhere that requires the removal of silicone. A popular use is in the kitchen and bath for silicone removal around sinks and bath tubs.
What else does it react with?
Digesil will also quickly react with latex and nylon. Digesil is typically safe on painted surfaces, vinyl and composites.
Does it smell?
Digesil has a very slight odor. As the ingredients are not listed, no special breathing apparatus is required. However, we do recommend using in a well-ventilated area.
Do you have to wear breathing apparatus?
No, see above.
Can Digesil be used as a degreaser?
Yes. However, we recommend eOx as a more economical degreaser.
How long does it take to work?
This depends on the type of polymer, thickness of the polymer, temperature, agitation, and age of the silicone. The actual reaction of Digesil with the sealant starts in as little as 30 seconds however; it will take 10-20 minutes before you will see anything.
How much does it remove?
Digesil will remove 100% of all the silicone it comes in contact with; however, the exact amount depends on the type of silicone. For most household silicones, a 6-oz. container of the gel will remove around 6-8 linear feet of 1/4” bead. As there are hundreds if not thousands of silicone sealants on the market your exact amount will vary.
Is it hazardous for transportation?
No. Digesil is not hazardous to ship. Digesil contains no EPA listed ingredients. Additionally, it does not have to be stored in a Flammable cabinet like other solvents.
Is it a solvent?
No. Digesil does not dissolve silicone like sugar dissolves in water. The Digesil actually breaks the bonds of the silicone into small parts so that it can emulsify the silicone in the solution.
Can it be used in parts washers or ultrasonic tanks?
Yes. Digesil is compatible with numerous metals and plastics. Ultrasonics actually decreases the amount of cleaning time by upwards of 75%. Heat, up to 49°C (120°F), can also be used to decrease cleaning time by upwards 50%.
Will temperature effect performance?
Yes, elevating the temperature of the Digesil will improve its performance. See above. On the low side, we recommend a temperature of at least 68°F in the application area. Any lower temperature and the product performance is very slow.
Can it be filtered?
Yes, Digesil can be filtered and this is recommended to extend the life of the material. A 10-micron filter is usually sufficient.
How do I know when it is not working anymore?
When the item/part no longer gets clean in the typical cleaning time for your particular application. When you first start using Digesil, it is worthwhile to note the initial cleaning time for reference and comparison. Additionally, if you will be using the material on a regular basis, it is good to note how many parts you cleaned with a specific volume. This enables easy yield calculations to determine the amount of Digesil you require for your particular job.
Can it be reused?
The Digesil can continue to be used until it no longer digests the silicone. Once the material no longer works it must be disposed.
How do I dispose of it?
Digesil may be disposed of with your other solvents. The material does have a high heating value and can be burned for fuel value. Consult with your environmental department for final ruling as regulations vary by county and state.
Will it remove epoxies?
Digesil will remove some epoxies. The best way to determine this is to send RPM Technology a sample of the material you want to remove so we can determine which solvent is best for your application.